Thermo-oxidation and analysis of JET codeposits

被引：8

作者：

Haasz, A. A. ^{[1
]}

Likonen, J. ^{[2
]}

Coad, J. P. ^{[3
]}

Tsui, C. K. ^{[1
]}

Davis, J. W. ^{[1
]}

Widdowson, A. M. ^{[3
]}

机构：

[1] Univ Toronto, Inst Aerosp Studies, Toronto, ON M3H 5T6, Canada

[2] Assoc EURATOM TEKES, VTT Proc, Espoo 02044, Finland

[3] UKAEA Euratom Fus Assoc, Culham Sci Ctr, Abingdon OX14 3DB, Oxon, England

来源：

JOURNAL OF NUCLEAR MATERIALS | 2009年 / 390-91卷

基金：

英国工程与自然科学研究理事会;

关键词：

C-D-LAYERS; DIVERTOR TILES; CARBON-FILMS; REMOVAL; OXIDATION;

D O I：

10.1016/j.jnucmat.2009.01.303

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Following the thermo-oxidation study of D removal from JET divertor codeposits, post oxidation Surface analyses were performed using SIMS, NRA and profilometry. The analysis confirms that the D content was reduced by at least an order of magnitude after 8-h oxidation at 623 K (350 degrees C) and 21 kPa (160 Tort) O-2 pressure - in agreement with TDS measurements. The codeposits studied contain Be and C. Those on the vertical the surfaces have a duplex structure with a C-D rich layer on the surface and a Be-C layer underneath; during oxidation the outer layer is removed and the inner layer remains. Codeposits with low Be content from the shadowed area have single-layer structures; during oxidation their thicknesses were reduced by about an order of magnitude. For the JET codeposits studied (with Be/C up to similar to 1) it appears that Be does not affect the oxidative removal of deuterium from the codeposit in a significant way. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：626 / 630

页数：5

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